The South American #monsoon, which determines the #climate of much of the continent, might be pushed towards a “critical destabilisation point”, finds new study with PIK scientist Niklas Boers. This could put the  #Amazon #rainforest at risk of large-scale dieback, which would in turn lead to substantial additional global warming due to additional release of greenhouse gases from the degrading trees.
https://www.pik-potsdam.de/en/news/latest-news/a-destabilizing-link-amazon-rainforest-degradation-and-deforestation-endanger-the-south-american-monsoon-1?set_language=en

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 Seit etwa einem halben Jahr wird ununterbrochen eine rekordhohe Durchschnittstemperatur der Erdoberfläche registriert. „Damit befinden wird uns zumindest im Moment sehr nah an einer mittleren Erderwärmung von 1,5 Grad“, sagt PIK-Forscher Dieter Gerten.

Ein durchschnittliches oder gar eher kühles Jahr, wie es sie im 20. Jahrhundert gab, sei in absehbarer Zeit nicht mehr zu erwarten: https://www.rnd.de/wissen/wird-2023-das-waermste-jemals-gemessene-jahr-rekordtemperaturen-im-september-2I7H5UAMK5PTRPS4DMCQEIPMT4.html 

 “My emotional response is anger. With every square kilometre of deforestation, every fraction of degree of global warming, we are raising the risk of a tipping point. Yet, it is incredibly simple to just stop deforestation. It is an absolutely unique ecosystem that we really can’t afford to lose”, says PIK scientist Niklas Boers, co-author of the newly published study on the South American monsoon in The Guardian: https://www.theguardian.com/environment/2023/oct/04/south-american-monsoon-heading-towards-tipping-point-likely-to-cause-amazon-dieback 

 "It is not enough to decarbonize the global energy system. The other #planetaryboundaries on land, biodiversity, nutrients, water & pollutants can on their own make us crash through the 1.5°C limit." PIK Director Johan Rockström writes about the state of our planet in a Time op-ed: https://time.com/collection/time100-voices/6315766/planetary-health-check-johan-rockstrom/?utm_source=twitter&utm_medium=social&utm_campaign=social-share-article&utm_term=ideas

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 All #PlanetaryBoundaries mapped out, six of nine crossed: For the first time, an international team of scientists is able to provide a full picture of planetary resilience by mapping out all nine boundary processes that define a safe operating space for humanity. 

“This update clearly depicts a patient that is unwell, as pressure on the planet increases and vital boundaries are being transgressed”, says co-author Johan Rockström: https://www.pik-potsdam.de/en/news/latest-news/a-full-picture-of-planetary-resilience-all-boundaries-mapped-out-six-of-nine-crossed

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 1st systematic stability inspection for West #Antarctica: Current #ice loss may still be reversible! But: Destabilization of marine sectors of ice sheet could initiate slow, but certain long-term ice loss.
https://www.pik-potsdam.de/en/news/latest-news/stability-inspection-for-west-antarctica-shows-marine-ice-sheet-is-not-destabilized-yet-but-possibly-on-a-path-to-tipping

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